Effect of aspect ratio and inlet manifold shape on the laminar-to-turbulent transition of gas flow in rectangular microchannels
Sign Up to like & getrecommendations! Published in 2021 at "Experiments in Fluids"
DOI: 10.1007/s00348-021-03137-3
Abstract: A combined experimental and numerical study on the laminar-to-turbulent transition in microchannels using gas flow is presented. The effects of two geometric parameters, namely aspect ratio (height to width) of microchannels and inlet manifold shape,… read more here.
Keywords: gas; transition; shape; aspect ratio ... See more keywords
A two-equation local-correlation-based laminar-turbulent transition modeling scheme for external aerodynamics
Sign Up to like & getrecommendations! Published in 2020 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2020.106128
Abstract: Abstract A local-correlation-based laminar-turbulent transition model has been developed for external aerodynamic problems and coupled with the Spalart-Allmaras ( S − A ) turbulence model. This laminar-turbulent transition modeling scheme is then termed as the… read more here.
Keywords: transition; turbulence; turbulent transition; model ... See more keywords
Time-dependent mass-transfer behaviour under laminar and turbulent flow conditions in rotating electrodes: A CFD study with analytical and experimental validation
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2019.03.152
Abstract: Abstract Results of numerical calculations and their comparison with analytical expressions or experimental data under laminar and turbulent flow conditions are reported. It is predicted the transient and steady-state behaviour of mass-transfer coefficients and shear… read more here.
Keywords: laminar turbulent; turbulent flow; mass; mass transfer ... See more keywords
Laminar-turbulent intermittency measurement based on the uncalibrated hot-film data
Sign Up to like & getrecommendations! Published in 2020 at "Measurement"
DOI: 10.1016/j.measurement.2020.107575
Abstract: Abstract A new technique for the laminar-turbulent intermittency measurement based on the surface hot-film data is presented. The existing techniques require data acquired from the calibrated hot-films which leads to the real wall shear stress… read more here.
Keywords: turbulent intermittency; intermittency measurement; laminar turbulent; film ... See more keywords
Interfacial force study on a single bubble in laminar and turbulent flows
Sign Up to like & getrecommendations! Published in 2017 at "Nuclear Engineering and Design"
DOI: 10.1016/j.nucengdes.2016.12.034
Abstract: Abstract Two-phase flows are present in various industrial processes in engineering fields ranging from light water reactor engineering to petrochemical engineering. In this paper, we conduct the interfacial force study on a single bubble under… read more here.
Keywords: force study; study single; interfacial force; laminar turbulent ... See more keywords
Effect of isolated roughness element height on high-speed laminar–turbulent transition
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.160
Abstract: Understanding of the roughness-induced laminar–turbulent transition of supersonic and hypersonic flows is partly challenged by the intricate sensitivities presented by different correlation criteria. We investigate experimentally the effect of height for an isolated roughness element… read more here.
Keywords: turbulent transition; effect; laminar turbulent; height ... See more keywords
Common features between the Newtonian laminar–turbulent transition and the viscoelastic drag-reducing turbulence
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.567
Abstract: The transition from laminar to turbulent flows has challenged the scientific community since the seminal work of Reynolds (Phil. Trans. R. Soc. Lond. A, vol. 174, 1883, pp. 935–982). Recently, experimental and numerical investigations on… read more here.
Keywords: drag reducing; turbulence; turbulent transition; laminar turbulent ... See more keywords
On the influence of the modelling of superhydrophobic surfaces on laminar–turbulent transition
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2020.516
Abstract: Abstract Superhydrophobic surfaces dramatically reduce the skin friction of overlying liquid flows, providing a lubricating layer of gas bubbles trapped within their surface nano-sculptures. Under wetting-stable conditions, different models can be used to numerically simulate… read more here.
Keywords: transition; superhydrophobic surfaces; modelling superhydrophobic; influence modelling ... See more keywords
Heat transfer increase by convection in liquid-infused surfaces for laminar and turbulent flows
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2022.279
Abstract: Abstract Liquid-infused surfaces can reduce friction drag in both laminar and turbulent flows. However, the heat transfer properties of such multi-phase surfaces have still not been investigated to a large extent. We use numerical simulations… read more here.
Keywords: turbulent flows; liquid; transfer; heat transfer ... See more keywords
On the role of the laminar/turbulent interface in energy transfer between scales in bypass transition
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2023.194
Abstract: Abstract We investigate the role of the laminar/turbulent interface in the interscale energy transfer in a boundary layer undergoing bypass transition with the aid of the Kármán–Howarth–Monin–Hill (KHMH) equation. A local binary indicator function is… read more here.
Keywords: turbulent interface; energy; laminar turbulent; interface ... See more keywords
Laminar and turbulent plasmoid ejection in a laboratory Parker Spiral current sheet
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Plasma Physics"
DOI: 10.1017/s0022377821000775
Abstract: Quasi-periodic plasmoid formation at the tip of magnetic streamer structures is observed to occur in experiments on the Big Red Ball as well as in simulations of these experiments performed with the extended magnetohydrodynamics code,… read more here.
Keywords: plasmoid formation; turbulent plasmoid; plasmoid ejection; plasmoid ... See more keywords